Number Program Exercise ( Level -1)

 Number Programs for Absolute Beginners :

LEVEL 1 à

1.      WAP in C/ C++/ java to perform the following tasks :

a.      Accept two numbers from the user( a and b).

b.      Print the numbers.

c.       Print the smallest number.

d.      Calculate their :

                                                              i.      Summation (a+b)

                                                            ii.      Subtract them (a-b)

                                                          iii.      Multiply them (a*b)

                                                           iv.      Divide them (a/b – quotient)

                                                             v.      Remainder (a%b)

                                                           vi.      Square root of each numbers.

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2.      WAP in C/ C++/ java to print the even numbers between M and N ( 0> M,N <100 )

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3.      WAP in C/ C++/ java to find the suffix of the given number.

Example,

            Inputs              Outputs

            1                      st

            2                      nd

            3                      rd

            11                    th

            21                    st

22                    nd

            23                    rd

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4.      WAP in C/ C++/ java to divide two integers (dividend and divisor)
Example,

Dividend = 7

Divisor = 2
Result = 3

Dividend = -17

Divisor = 5
Result = -3

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5.      WAP in C/ C++/ java to generate prime numbers between M and N ( 0> M,N <1000 )

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6.      WAP in C/ C++/ java to find the factorial of the number.

            Factorial :  3! =  1 x 2 x 3 = 6

                               4! = 1 x 2 x 3 x 4 = 24

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7.      WAP in C/ C++/ java to find sum of the digits of the number.

Example, Input : 123,  Output : 6       [ expl. 1+2+3]

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8.      WAP in C/ C++/ java to check whether the number is a Neon number or not.

Input : 9

Output : Neon Number

Explanation: square is 9*9 = 81 and sum of the digits of the square ( 8+1) is 9.

Input :12

Output : Not a Neon Number

Explanation: square is 12*12 = 144 and sum of the digits of the square is 9 (1 + 4 + 4) which is not equal to 12.

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9.      WAP in C/ C++/ java to check whether the number is a Special Number or not.

Definition : If the sum of the factorial of digits of a number (N) is equal to the number itself, the number (N) is called a special number.

INPUT : 145     The digits of the number are: 1, 4, 5

Factorial of digits:

!1 = 1

!4 = 4*3*2*1 = 24

!5 = 5*4*3*2*1 = 120

Sum of factorial of digits = 1 + 24 + 120 = 145

Hence, the given number 145 is a special number.

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10.  WAP in C/ C++/ java to check whether a number is a Harshad Number or not.
In recreational mathematics, a Harshad number in a given number base is an integer that is divisible by the sum of its digits when written in that base.
Example: Number 200 is a Harshad Number because the sum of digits 2 and 0 and 0 is 2(2+0+0) and 200 is divisible by 2. Number 171 is a Harshad Number because the sum of digits 1 and 7 and 1 is 9(1+7+1) and 171 is divisible by 9.

         Input a number : 353                                                    

         Expected Output :  353 is not a Harshad Number.

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